•ATLANTA - About 220 radioactive samples previously used for research have been removed from a Georgia Tech center to prevent access to them by terrorists, federal officials said.

The National Nuclear Security Administration, an agency within the federal Department of Energy, removed about 68,000 curies of radioactive cobalt-60 from the Neally Nuclear Research Center. The effort was part of the agency's Global Threat Reduction Initiative to keep such material from being used by terrorists for dirty bombs.

The material was used by the school for research.

Man pleads guilty to killing four

•CALHOUN - Accused killer Jerry Jones has pleaded guilty to killing three of his ex-girlfriend's relatives and his own infant daughter.

He entered the plea Tuesday morning during a hearing on pretrial motions. Jones also is accused of abducting three other children at the time of the killings in January 2004 in northwest Georgia.

Prosecutor Joe Campbell said Jones wore regular clothes Tuesday when he pleaded guilty to his entire 22-count indictment. The indictment includes four counts of murder and counts of kidnapping, cruelty to children, theft and firearms violations, Campbell said.